I have seen this question multiple times around the internet. Even to the point of searching for the original DOS version of Fallout. It seems finding the original DOS version is impossible. However, with the help of some forums online, there is a way to "convert" a regular windows version of Fallout, and use it in DOSbox. I've decided to write a very detailed tutorial. Plus, this requires no warez, or illegal files. Just the original Fallout patch, and some system files.

What you need:
DOSBox 0.74 | Or equivalent
Windows version of Fallout 1.0

1. Download the Fallout 1.1 DOS Patch
This will patch the game, but will also contain the DOS version of the fallout executable.

2. Extract the contents of the archive, and copy all files into your fallout folder. If asked, overwrite everything.

3. Download dos4gw.exe and place it in the "Fallout" folder. NOT the "DATA" folder. It needs to be where your fallout exe files are located, in the main folder.

4. Download hmidet.386 and place it in the Fallout folder. Just like step 3.

5. Download hmidrv.386 and place it in the Fallout folder. Just like step 3.

Your Fallout folder should look something like this:

I highlighted the important files. Ignore everything else.

6. Open your DOSbox configuration file, and change the value of "memsize" to "32".

7. Open the Fallout.CFG in your Fallout folder. This is a configuration file. Change the value of "art_cache_size" to "5".

8. In DOSBox, cd to the Fallout folder, and type "Fallout". The game will now run in DOSBox. You may or may not have sound. So if you want sound, you may have to tinker with the DOSBox settings.

Nice tutorial, very useful for anyone with newer Windows than XP I didn't even know there was ever a Dos version of Fallout
But, shouldn't there be Setup / configuration file(s) for a Dos version then, to select a card for music and sound?

Nice tutorial, very useful for anyone with newer Windows than XP I didn't even know there was ever a Dos version of Fallout
But, shouldn't there be Setup / configuration file(s) for a Dos version then, to select a card for music and sound?

Fallout had two original versions. Same game, just two executables. One a Windows NT executable (which DOSBox will not run) and the other an exe DOSBox will run (made for DOS).

As for the config file, someone online mentioned needing a file for sound.. a file that wasn't included with the Windows version of Fallout. Finding the "original" DOS Fallout is pretty much impossible. Believe me.. I've looked.

I have made the memsize changes and the art cache size changes, added the 3 files that were needed, but it still crashes.

I tried updating the fallout game to 1.1 with the dos file, and then run it using the windows exe to check the version and it is always ver 1.0, so i updated with both the dos and win ver updates and it run on windows as ver 1.1

I have tried just using the Dos update and running it on the TFP, but it keeps crashing back to C prompt.

Only difference between your screen shot of the file folder and mine is I don't have a fallupw1 folder.